Produktbild: Spin Exchange
Band 8

Spin Exchange Principles and Applications in Chemistry and Biology

Fr. 137.00

inkl. gesetzl. MwSt., Versandkostenfrei


Beschreibung

Produktdetails

Einband

Taschenbuch

Erscheinungsdatum

01.03.2012

Verlag

Springer Berlin

Seitenzahl

244

Maße (L/B/H)

22.9/15.2/1.5 cm

Gewicht

382 g

Auflage

Softcover reprint of the original 1st edition 1980

Sprache

Englisch

ISBN

978-3-642-67668-0

Beschreibung

Produktdetails

Einband

Taschenbuch

Erscheinungsdatum

01.03.2012

Verlag

Springer Berlin

Seitenzahl

244

Maße (L/B/H)

22.9/15.2/1.5 cm

Gewicht

382 g

Auflage

Softcover reprint of the original 1st edition 1980

Sprache

Englisch

ISBN

978-3-642-67668-0

Herstelleradresse

Springer-Verlag KG
Sachsenplatz 4-6
1201 Wien
AT

Email: GPSR Kontakt

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  • Produktbild: Spin Exchange
  • 1. Introduction.- 2. Theory of Spin Exchange.- 2.1 Exchange Interaction Between Two Paramagnetic Particles.- Dependence of Interaction Energy on Spin.- Spin-Hamiltonian of Exchange Interaction.- The Nature of Exchange Interaction. The Two-Electron System.- Interaction Between Many-Electron Systems. Delocalization and Spin Polarization.- Anisotropy of Exchange Interaction.- Semi empirical Estimates of Exchange Integral.- 2.2 Qualitative Description of Spin Exchange Process.- Spin Exchange.- Spin Exchange in a Two-Electron System.- Spin Density Matrix.- Spin Motion Due to Exchange Interaction.- 2.3 Formal Kinetics of Spin Exchange in Magnetically Dilute Solutions.- Binary Collision Approximation.- Rate of Bimolecular Spin Exchange Process.- Kinetics of Spin Exchange for Particles with Spins S = 1/2.- Kinetic Equations for Free Radicals Showing Hyperfine Structure (HFS) in Their ESR Spectra.- 2.4 Spectroscopic Manifestations of Spin Exchange.- Spectral Diffusion Due to Spin Exchange.- Shape of ESR Spectra.- Slow Exchange.- Fast Exchange.- Other Methods of Measuring the Rate of Spin Exchange.- Effect of Saturation.- Electron-Electron Double Resonance (ELDOR).- Electron Spin Echo.- 2.5 Theory of Sudden Collisions.- 2.5.1 Model of Sudden Collisions.- Basic Assumptions.- Equations for the Estimation of xc.- 2.5.2 Kinetic Equations.- Steady-State Equation for the Operator of Collision Efficiency.- 2.5.3 Spin Exchange Between Radicals.- Model System.- Spin Exchange Between Radicals in the Presence of Hyperfine Interaction.- 2.5.4 Spin Exchange Between Radicals with Anisotropic Interaction.- Rotation of Partners at the Moment of Their Contact.- Orientation Relaxation of Particles in Intervals Between Reencounters.- 2.5.5 Spin Exchange of Radicals with Other Paramagnetic Particles.- Spin Exchange Between Radicals and Spins SB with Long Times of Paramagnetic Relaxation.- Shape of ESR Spectra.- The Influence of the Relaxation of Spin SB on the Rate of Exchange.- Anisotropy of Spin Exchange.- 2.5.6 Spin Exchange in Biradicals.- The Model.- Kinetic Equations.- The ESR Spectrum of Nitroxide Biradicals.- 2.6 The Model of Diffusive Passage.- The Model.- An Equation for the Operator of Collision Efficiency.- The Kinetic Equations.- The Spin Exchange Between Two Kinds of Particles with Spins SA = SB = 1/2.- Comparison of Results Obtained from Models of Sudden Collisions and Those of Diffusive Passage.- 3. Experimental Measurement of Spin Exchange Rate.- 3.1 Experimental Measurement of Spin Exchange Rate Constants from ESR Spectra.- 3.1.1 Exchange Between Identical Particles with S = 1/2.- Doublet Spectrum with a Zero Initial Width.- Complex Spectra.- Determination of Rate Constants from Exchange Broadening of Complex Spectra.- Determination of Rate Constants from Exchange Shift of the Lines of Complex Spectra.- Determination of Rate Constants from Exchange Narrowing of Complex Spectra.- Peculiarities of Exchange Narrowing in Concentrated Solutions.- Comparison of Spin Exchange Rate Constants Measured by Different Techniques.- 3.1.2 Exchange Between Different Particles.- 3.2 Other Methods of Measuring the Spin Exchange Rate Constants.- 3.2.1 Continuous Wave Saturation Method.- 3.2.2 Electron-Electron Double Resonance.- 3.2.3 Electron Spin Echo.- 3.3 Separation of Exchange and Dipole-Dipole Contributions to Concentration Broadening of ESR Lines.- Theoretical Estimation of Dipole Broadening.- Experimental Estimation of Dipole-Dipole Contribution at Low Viscosity.- Separation of the Cases of Exchange and Dipole-Dipole Broadening According to Viscosity and Temperature Dependences.- 3.4 Separation of the Cases of Weak and Strong Exchange.- 4. Spin Exchange in Chemistry and Biology.- 4.1 Study of Diffusion Collisions in Solutions.- Hydrodynamic Model of Diffusion Collisions.- Potentialities of Spin Exchange.- 4.1.1 Collisions in Single-Component Solvents.- Spin Exchange Between Radicals.- Spin Exchange Between Free Radicals and Paramagnetic Complexes.- 4.1.2 Collisions in Complex Systems.- Binary Solvents.- Liquids Near Critical Points.- Polymeric and Heterogeneous Systems.- Collisions of Macroradicals.- 4.1.3 Study of Intramolecular Collisions of Paramagnetic Fragments.- 4.2 Estimation of the Energy of Exchange Interaction During Collisions.- 4.2.1 Free Radicals.- 4.2.2 Spin Exchange with Metal Complexes.- 4.2.3 Discussion of Results.- 4.3 Collisions of Charged Particles.- 4.3.1 Experimental Results.- Spin Exchange in Solutions of Anion Radical (S03)2N02-.- Spin Exchange Involving Charged Nitroxide Radicals.- Spin Exchange Between Anion Radicals in Organic Solvents.- 4.3.2 Comparison of Experiments on Spin Exchange with the Diffusion Theory of Collisions of Charged Particles in Liquid.- 4.3.3 Study of Collisions Between Aquo Complexes of Transition Metals.- Role of Counterions in Collisions of Aquo Complexes of Vanadyl.- An Example of the Process with Weak Influence of Electrostatic Repulsion.- 4.4 Biological Applications of Spin Exchange.- Paramagnetics Used as Spin Probes.- 4.4.1 Measurement of Binary Collision Rate of Molecules in Biological Systems.- 4.4.2 Study of Location of Paramagnetic Centers in Biopolymers.- Quantitative Interpretation of the Values of Kg for Spin Exchange Processes Involving Paramagnetic Centers of Biopolymers.- 4.4.3 Development of Individual ESR Spectra of Spin Labels via Spin Exchange.- 4.4.4 Spin Exchange Titration.- Kinetics of Reactions Involving Oxygen Molecules.- Coordination of Paramagnetic Ions by Macromolecules.- 4.4.5 Other Applications.- 4.5 Conclusion.- List of Frequently Used Notations and Abbreviations.- References.